AMPHRYSSUS, or AMPHRYSSUS, in Ancient Geography, a river of Phthiotis, a district of Thessaly, running by the foot of Mount Othrys, from south to north, into the Enipeus at Thebes of Thessaly; where Apollo fed the herds of King Admetus (Virgil, Lucan). Another Amphryssus in Phrygia, rendering women barren, according to Pliny: Hence the epithet Amphryssacus (Statius). Also a town of Phocis, at the foot of Mount Parnassus, encompassed with a double wall by the Thebans in the war with Philip (Pausanias): Ampbryssa Vates, in Virgil, denotes the Sibyl.